var banner = new Array(); banner.push('https://i.servimg.com/u/f46/11/36/55/25/ban210.jpg'); banner.push('https://i.servimg.com/u/f46/11/36/55/25/ban310.jpg'); banner.push('https://i.servimg.com/u/f46/11/36/55/25/ban110.jpg'); document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];